Strap for Clous de Paris 40

The lug width of the Longines Heritage L2.684.4.16.3 is exactly 21mm. This measurement is taken with a digital calliper, measuring the internal space between the lugs of the case. A compatible strap must have a 21mm lug width and thickness between 2.8 and 3.0mm for correct fitting without structural stress.

Alligator leather with vegetable tanning is the primary choice: the large grain of the scute dialogues with the constructive brutalism of the steel case. A worthy alternative is Hungarian shell cordovan, which develops deep burgundy patina over time. For urban contexts, waxed black calf; for aquatic environments, vulcanised rubber with fine grain.

Position the watch on a soft cushion. Locate the lugs (spring bars) that held the previous strap. Using a dedicated tool or small flat-head screwdriver, gently push the spring bar downward and slide the old strap outward. Insert the new strap by first aligning one end in the lug, then the other, ensuring the strap width is perpendicular to the case.

Yes, provided it is verified in three points: lug width exactly 21mm, thickness between 2.8 and 3.0mm, and absence of decorative elements on the strap width that could bind the case lugs. The artisanal straps from milanostraps.it are constructed to these tolerances, ensuring structural and aesthetic compatibility with the Heritage's original proportions.

A vegetable-tanned or shell cordovan strap, worn daily, has an average lifespan of 3-5 years before requiring replacement. Factors affecting durability: ambient humidity, maintenance frequency (annual cleaning, treatment with specific creams), tanning type. Waxed calf leather tends to maintain longer than vegetable tanning when exposed. Casati Milano provides an 18-month warranty on every artisanal creation.